2018 Dodge Grand Caravan electrical problems

The electronic lock actuator on the rear sliding doors (driver-side or passenger-side) fails, causing the door to become stuck in either the locked or unlocked position. Owners report the door cannot be opened with the key fob, interior unlock buttons, or by manual force. Many report a loud buzzing sound preceding the failure. No manual override mechanism exists to open a locked door.

When: Typically around 40,000–60,000 miles; one case at 78,000 miles; some owners report failure within 2–3 years of ownership

Symptoms owners cite: Door stuck in locked position, unable to unlock with fob or interior button; Door stuck in unlocked position, unable to lock; Loud buzzing or humming noise when lock actuator engages, especially at startup or when using locks; Intermittent lock/unlock malfunction—works unpredictably or only on certain attempts; Door completely jammed; cannot open manually from inside or outside

Repairs/costs cited: Dealers quote $1,100–$1,700 for lock actuator replacement; some require replacement of door latch rods, retainers, and master switch assembly. Labor and parts combined often exceed $1,300–$1,700 per door. One owner reported extended warranty coverage; Dodge issued a warranty extension notice for sliding door power lock actuators to at least some owners.

Recalls/TSBs owners mention: Dodge issued a warranty extension for sliding door power lock actuators (extended warranty notice mentioned in narrative #10); no recall issued despite widespread complaints. Dealer service bulletins or technical service bulletins not explicitly cited. Campaign 18V524000 relates to electrical system but was determined not to apply to some affected vehicles.

Engine stalls abruptly while the vehicle is in motion, causing complete power loss and difficulty steering (loss of power steering assist). Vehicle restarts immediately or after multiple key-turn attempts. Check Engine light illuminates intermittently. Owners report this occurs without warning at various speeds, creating serious crash risk especially on highways.

When: Reported at various mileages: one case at 98,817 miles; others mention highway driving or during deceleration/low-speed traffic transitions

Symptoms owners cite: Engine cuts off while driving at highway speeds or during traffic deceleration; No warning before stall; occurs suddenly; Loss of power steering when engine stalls; Vehicle restarts after one or multiple key-turn cycles; Check Engine light illuminates intermittently; Engine hesitates or 'chokes' when accelerating from a stop, feeling like it might stall

Codes mentioned: P0128 (Coolant Thermostat), Misfire codes (implied by independent mechanic diagnosis)

Repairs/costs cited: One independent mechanic diagnosed misfire; dealers suggested TIPM (Totally Integrated Power Module) failure. One owner reports dealer refused to replace TIPM without charge despite warranty status. One case documented as associated with NHTSA Campaign 18V524000 (Electrical System), though the affected VIN was not included in that recall.

Recalls/TSBs owners mention: Dodge service bulletins or technical service bulletins not explicitly mentioned. NHTSA Campaign 18V524000 (Electrical System) addresses some stall conditions but did not apply to all affected vehicles based on VIN. One owner reports Dodge dealership stated vehicle did not match recall criteria despite symptomatology matching recall description.

When turning the ignition key, the starter does not engage reliably. Owner must cycle the key on and off multiple times before the engine cranks. Problem worsens in hot ambient temperatures. One owner suspected ignition control module; Dodge service indicated possible TIPM issue.

When: Reported especially in hot weather conditions

Symptoms owners cite: Key turn does not immediately crank starter; Requires multiple key-on/off cycles before engine starts; Problem more pronounced in hot weather; No warning indicators

Repairs/costs cited: Dodge service indicated TIPM (Totally Integrated Power Module) as possible cause but declined to replace without charge. Owner research suggested ignition control module could also be culpable.

Recalls/TSBs owners mention: Dodge service identified TIPM as suspected cause but would not cover repair. No recall or service bulletin explicitly mentioned.

Power lock actuators fail across multiple doors simultaneously or in sequence—including front doors and both sliding doors. Doors either fail to lock or fail to unlock; some fail in the locked position, trapping occupants.

When: Various mileages; one case at less than 56,000 miles with both sliding doors failed; another at 66,000 miles

Symptoms owners cite: Front door lock does not respond to fob or interior button; Passenger or driver sliding door will not lock or unlock reliably; Multiple doors failing in the same trip or within weeks of each other; Doors either all stuck locked or all stuck unlocked

Repairs/costs cited: One owner with extended warranty paid deductible per failed door; costs not fully detailed. One case required front door lock repair followed by both sliding door failures; dealer could not identify root cause.

Recalls/TSBs owners mention: None explicitly documented for this multi-door failure pattern.

The passenger-side sliding door's obstruction-detection sensor failed to detect a hand/arm between the closing door panels. The door continued to close and latch despite the obstruction, causing injury to the contact's son's hand.

When: Approximately 35,400 miles

Symptoms owners cite: Door sensor does not detect hand or object between door panels; Door continues to close and latch despite obstruction; No indication of problem before incident

Repairs/costs cited: Vehicle was not taken to dealer; contact manually released door from outside latch.

Recalls/TSBs owners mention: Manufacturer notified and stated door was not supposed to continue closing; no repair conducted or offer mentioned.

Engine develops a cracked cylinder head, detected via check engine light and subsequent dealership diagnosis. One owner reports their mechanic encountered another 2018 Grand Caravan with identical cylinder head failure at only 45,000 miles.

When: At 75,000 miles in reported case; another case noted at 45,000 miles by mechanic shop

Symptoms owners cite: Check engine light illuminates; Engine will not start after initial light goes off; Mechanic diagnoses cylinder head crack requiring replacement

Repairs/costs cited: Cylinder head replacement required; costs not quoted in narrative.

Recalls/TSBs owners mention: No recall or service bulletin explicitly mentioned; owner states 'known issue' but is concerning given vehicle maintained per manufacturer recommendations.